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United States Patent | 5,162,760 |
Phillips ,   et al. | November 10, 1992 |
Improved frequency characteristics can be achieved by using input/output pads on a surface mount block filter which pads are mounted on mesas formed by troughs cut through the dielectric material and metallization.
Inventors: | Phillips; James R. (Albuquerque, NM); Tootoonchi; Ali A. (Albuquerque, NM) |
Assignee: | Motorola, Inc. (Schaumburg, IL) |
Appl. No.: | 811154 |
Filed: | December 19, 1991 |
Current U.S. Class: | 333/206; 333/222 |
Intern'l Class: | H01P 001/202 |
Field of Search: | 333/202,204,206,207,219,222 |
4673902 | Jun., 1987 | Takeda et al. | 333/202. |
4879533 | Nov., 1989 | de Muro et al. | 333/206. |
4937542 | Jun., 1990 | Nakatuka | 333/202. |
Foreign Patent Documents | |||
0043904 | Feb., 1987 | JP | 333/202. |
0006103 | Jan., 1991 | JP | 333/206. |